The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2023
Filed:
Dec. 08, 2016
Toray Industries, Inc., Tokyo, JP;
Katsuya Sode, Otsu, JP;
Takashi Chida, Otsu, JP;
Toru Sugahara, Nagoya, JP;
Michio Wakatabe, Otsu, JP;
Masaru Hashimoto, Otsu, JP;
Tetsuya Sunahara, Otsu, JP;
Yuya Umezaki, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A porous carbon sheet including at least carbon fibers, having a thickness of 30 to 95 μm, a gas permeation resistance of 0.5 to 8.8 Pa, and a tensile strength of 5 to 50 N/cm, and a gas diffusion electrode substrate including a porous carbon sheet containing at least carbon fibers, at least one surface thereof having a microporous layer containing at least an electric conductive filler, the gas diffusion electrode substrate being dividable in the thickness direction into a smaller pore part and a larger pore part, the larger pore part having a thickness of 3 to 60 μm.